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| 型號(hào)： | S-35190A-T8T1 |
| 元件分類： | 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取 |
| 英文描述： | REAL TIME CLOCK, PDSO8 |
| 封裝： | TSSOP-8 |
| 文件頁數(shù)： | 25/47頁 |
| 文件大?。?/td> | 527K |
| 代理商： | S-35190A-T8T1 |
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3-WIRE REAL-TIME CLOCK
Rev.1.2_00
S-35190A
Seiko Instruments Inc.
31
Adjustment of Oscillation Frequency
1. Configuration of oscillator
Since crystal oscillation is sensitive to external noise (the clock accuracy is affected), the following
measures are essential for optimizing the oscillator configuration.
(1) Place the S-35190A, crystal oscillator, and external capacitor (Cg) as close to each other as
possible.
(2) Increase the insulation resistance between pins and the substrate wiring patterns of XIN and
XOUT.
(3) Do not place any signal or power lines close to the oscillator.
XIN
XOUT
S-35190A
Cd
Crystal oscillator: 32,768 Hz
CL = 6 pF
*1
Cg = 0 to 9.1 pF
Cpi, Cpo < 5 pF
Oscillator internal constant
standard values:
Rf = 100 M
Rd = 100 k
Cd = 8 pF
Rf
Rd
Cg
Parasitic
capacitance Cpi
Parasitic capacitance Cpo
*1. When using the crystal oscillator with a CL value of 7 pF, externally connect Cd.
Figure 35 Connection Diagram 1
XIN
Crystal
oscillator
XOUT
VSS
Cg
8
7
6
5
1
2
3
4
S-35190A
Figure 36 Connection Diagram 2
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| S-35380A-T8T1G | REAL TIME CLOCK, PDSO8 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-35190A-T8T1G | 功能描述:實(shí)時(shí)時(shí)鐘 3-Wire 1.3-5.5V RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| S-35192A | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:3-WIRE REAL-TIME CLOCK |
| S-35192A-I8T1G | 制造商:Seiko Instruments Inc (SII) 功能描述:3WIRE REAL TIME CLCK |
| S-35199A01 | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:3-WIRE REAL-TIME CLOCK |
| S-35199A01-HRT1 | 制造商:Seiko Instruments Inc (SII) 功能描述:3WIRE REAL TIME CLCK |
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